<template>
  <div class="login">
    <el-form ref="loginRef" :model="loginForm" :rules="loginRules" class="login-form">
      <h3 class="title">{{ title }}</h3>
      <el-form-item prop="username">
        <el-input
            v-model="loginForm.username"
            type="text"
            size="large"
            auto-complete="off"
            placeholder="账号"
        >
          <template #prefix>
            <svg-icon icon-class="user" class="el-input__icon input-icon"/>
          </template>
        </el-input>
      </el-form-item>
      <el-form-item prop="password">
        <el-input
            v-model="loginForm.password"
            type="password"
            size="large"
            auto-complete="off"
            placeholder="密码"
            @keyup.enter="handleLogin"
        >
          <template #prefix>
            <svg-icon icon-class="password" class="el-input__icon input-icon"/>
          </template>
        </el-input>
      </el-form-item>
      <el-form-item prop="code" v-if="captchaEnabled">
        <el-input
            v-model="loginForm.code"
            size="large"
            auto-complete="off"
            placeholder="验证码"
            style="width: 63%"
            @keyup.enter="handleLogin"
        >
          <template #prefix>
            <svg-icon icon-class="validCode" class="el-input__icon input-icon"/>
          </template>
        </el-input>
        <div class="login-code">
          <img :src="codeUrl" @click="getCode" class="login-code-img"/>
        </div>
      </el-form-item>
      <el-checkbox v-model="loginForm.rememberMe" style="margin:0px 0px 25px 0px;">记住密码</el-checkbox>
      <el-form-item style="width:100%;">
        <el-button
            :loading="loading"
            size="large"
            type="primary"
            style="width:100%;"
            @click.prevent="handleLogin"
        >
          <span v-if="!loading">登 录</span>
          <span v-else>登 录 中...</span>
        </el-button>
        <div style="float: right;" v-if="register">
          <router-link class="link-type" :to="'/register'">立即注册</router-link>
        </div>
      </el-form-item>
    </el-form>

    <!-- 底部 -->
    <div class="el-login-footer">
      <span>Copyright © 2018-2025 ruoyi.vip All Rights Reserved.</span>
    </div>
  </div>
</template>

<script setup>
import {ref, onMounted, getCurrentInstance} from 'vue';
import {useRoute, useRouter} from 'vue-router';
import {ElMessageBox} from 'element-plus';
import {getCodeImg} from "@/api/login";
import Cookies from "js-cookie";
import {encrypt, decrypt} from "@/utils/jsencrypt";
import useUserStore from '@/store/modules/user';

const title = import.meta.env.VITE_APP_TITLE
const userStore = useUserStore()
const route = useRoute()
const router = useRouter()
const {proxy} = getCurrentInstance()

const loginForm = ref({
  username: "",
  password: "",
  rememberMe: false,
  code: "",
  uuid: ""
})

const loginRules = {
  username: [{required: true, trigger: "blur", message: "请输入您的账号"}],
  password: [{required: true, trigger: "blur", message: "请输入您的密码"}],
  code: [{required: true, trigger: "change", message: "请输入验证码"}]
}

const codeUrl = ref("")
const loading = ref(false)
// 验证码开关
const captchaEnabled = ref(true)
// 注册开关
const register = ref(false)
const redirect = ref(undefined)
const loginRef = ref(null)


async function handleLogin() {
  // 标准登录模式下，先进行表单校验
  const valid = await loginRef.value.validate();
  if (!valid) return;
  loading.value = true
  try {
    // 记住我功能 ,勾选了需要记住密码设置在 cookie 中设置记住用户名和密码
    if (loginForm.value.rememberMe) {
      Cookies.set("username", loginForm.value.username, {expires: 30})
      Cookies.set("password", encrypt(loginForm.value.password), {expires: 30})
      Cookies.set("rememberMe", loginForm.value.rememberMe, {expires: 30})
    } else {
      Cookies.remove("username")
      Cookies.remove("password")
      Cookies.remove("rememberMe")
    }

    // 调用 Vuex/Pinia action 发送统一的登录请求
    await userStore.login(loginForm.value);

    // 如果有 redirect，则跳转；否则跳转到首页
    const redirectPath = route.query.redirect || "/";
    router.push({path: redirectPath});

    // router.push({path: redirect.value || "/"});
  } catch (error) {
    if (error && error.response && error.response.data) {
      // 处理从后端返回的、被 request.js “放行”的业务错误
      const rawMsg = error.response.data.msg || '发生未知认证错误，请稍后重试。';
      ElMessageBox.alert(rawMsg, '认证失败', {
        type: 'error',
        confirmButtonText: '确定',
        dangerouslyUseHTMLString: true,
        customStyle: {
          'max-width': '45%',
          // height: '50%'
        }
      });
    }
    getCode(); // 刷新验证码，为手动登录做准备
  } finally {
    loading.value = false;
  }
}

function getCode() {
  getCodeImg().then(res => {
    captchaEnabled.value = res.captchaEnabled === undefined ? true : res.captchaEnabled;
    if (captchaEnabled.value) {
      codeUrl.value = "data:image/gif;base64," + res.img;
      loginForm.value.uuid = res.uuid;
    }
  });
}

function getCookie() {
  const username = Cookies.get("username");
  const password = Cookies.get("password");
  const rememberMe = Cookies.get("rememberMe");
  loginForm.value = {
    ...loginForm.value, // 保留 uuid 等已有的值
    username: username === undefined ? loginForm.value.username : username,
    password: password === undefined ? loginForm.value.password : decrypt(password),
    rememberMe: rememberMe === undefined ? false : Boolean(rememberMe)
  };
}

onMounted(() => {
  getCode();
  getCookie();
});

</script>

<style lang='scss' scoped>
.login {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100%;
  background-image: url("../assets/images/login-background.jpg");
  background-size: cover;
}

.title {
  margin: 0px auto 30px auto;
  text-align: center;
  color: #707070;
}

.login-form {
  border-radius: 6px;
  background: #ffffff;
  width: 400px;
  padding: 25px 25px 5px 25px;
  z-index: 1;

  .el-input {
    height: 40px;

    input {
      height: 40px;
    }
  }

  .input-icon {
    height: 39px;
    width: 14px;
    margin-left: 0px;
  }
}

.login-tip {
  font-size: 13px;
  text-align: center;
  color: #bfbfbf;
}

.login-code {
  width: 33%;
  height: 40px;
  float: right;

  img {
    cursor: pointer;
    vertical-align: middle;
  }
}

.el-login-footer {
  height: 40px;
  line-height: 40px;
  position: fixed;
  bottom: 0;
  width: 100%;
  text-align: center;
  color: #fff;
  font-family: Arial;
  font-size: 12px;
  letter-spacing: 1px;
}

.login-code-img {
  height: 40px;
  padding-left: 12px;
}

</style>